Lubricating-pulley.



HARVEY Gnonenvnivcn, or sr. Louis, ivrrssounr.

LUBRrcArING-IULLEY.

Application led'llarch'll, 1915. ySerial No.l1' 3,715.

To all whom t may concern:

Be it known that I, Hnnmr G.

citizen of the United States, and a resident of the cityof St. Louis, inthe State of AMissouri, have invented a certain new and use! fulImprovement in Lubricating-Pulleys, of which the following is aspecification.

My present invention relates to improved means for lubricating pulleys,applicable to various forms of such pulleys, wherein the lubricatingmember or ring is required to be locked to the shaft of the pulley, andmore particularly to improvements in the conk struction and arrangementdescribed and claimed in my Patent Number 10121182, dated December 19,1911, my primary object being to provide a lubricating member or ringwith means which automatically pre-V vent its rotation within the pulleyand obviates the necessity of set screws or other fastening members forsecuring the same to the shaft.

My invention also aims to provide certain other improvements which withthe above will be better understood by reference to the accompanyingdrawings, forming a part of this specification, and in which- Figure 1is an enlarged face view of the hub portion of one section of thepulley;

Fig. 2 is a transverse Vsection through the same, and Fig. 3 is a detailperspective'view of the lubricating ring, without Vits wheels, removed.

Referring now to these figures, the pulley, as in my patent abovereferred to, has a hub portion A provided with a lubricant holder A',annular in form and surrounding its boreithrough which the pulley shaftB j extends, this lubricant holder communicating with the bore andconsequently with the shaft B, by an annular chamber a., as seen in Fig.1.

In accordance with my present invention, the lubricating ring C, whichis disposed around the shaft within the annular chamber a, and which, asin my patent above re ferred to, is provided with arms c extendingwithin the annular lubricant holder A and provided therein with wheelsC, is provided with a counter weight C2, as best seen in Figs. 2 and 3,between its arms c in order to prevent rotation of the lubricating ringC as this structure will do when the pulley is rotated at acomparatively slow speed and a light lubricating oil is used. This ringC is further provided, however, with a slot par- VANGE, a j

tially surrounding its central opening,

shown at c', which extends partly around Specification of LettersPatent... Y Patented Feb. 8,1916.

the shaft Bv projecting through the saidv opening, the'slot bein"substantially shallow at its opposite end an being adapted fory thereception of a friction ball or roller C3, the function of which is tobind in the shallow ends of the slot c and against thesurface of theshaft B, when the pulley is rotating at high speed'A or a heavylubricating fluid is used, 1n order tov limit the rotative movementi ofthe lubricating ring with respect toV the shaft'B, and thusfoperate toautomati# cally lock the lubricating ring against rotatlvev movementwith the pulley. rIhe slot c .may have a small drain opening 02 leadingtherefrom; to permit of the discharge of lubricant which might otherwisecollect in the slot'and interfere with free movement of the ball orroller C3. Furthermore, as in f my patent above referred to, the boreof the tending inclined grooves D, extending along the shaft B, and theinner end portions of which grooves communicate 'with the annularchamber o; and consequently with the lubricant holder' A', it beingAnoted that in the present case', the said inner end portions of groovesD, as shown at (l, project at an acute angle with respect tothelongitudinal aXis of the boreA of the hub A, so as to form what ispractically a screw, forcing the lubricant out into the grooves D. Inaddition to the foregoing, the bore of the hub A is provided adjacentits outer' ends with annular grooves E, communicating with the lubricantholder A by means of apertures e, and each serving to contain a:collecting ring in the form of a draw spring E which is disposed withinthe recess and sprung around the shaft B. in direct engagementtherewith.l It will ,also be noted that in the present case the bore ofthe hub A is also provided with relatively small annular re-v cesses cadjacent to and beyond the annular yabove described, and as shown in thedrawings, lI am enabled to greatly increase the effectiveness of thelubricating arrangement as shown in my patent above referred to, in

connection with which the present inventionA is particularlydesigned asan improvement, although readily applicable to other and which ofnecessity must be prevented from c rotation with the pulley.

l/Vhile my improved lubricating arrangement, as thus described isparticularly adapted for use in connection with lubricating pulleys, itmay be utilized with equal facility and effect in connection withvarious other types of wheels rotating on shafts or axles, and I wish tobe understood as reserving all such uses as to which my invention may belogically applied.

l claim n l. ln a lubricating pulley of the character described, alubricating ring disposed around the pulley shaft and having a counterWeight normally holding the same against movement with the pulley andhaving other means automatically limiting its rotation with respect tothe shaft.

2. In a lubricating pulley ofthe character described, a. lubricatingring disposed around the pulley shaft and having a coun- Yter weightwhereby to normally prevent pulley shaft upon rotative movement there-4.7ln a lubricating .pulley of theucharacter described, a lubricatingring disposed around the pulley shaft and having an innerv grooveextending partly around the shaft and provided with shallow ends, and aroller disposed in the groove whereby to automatiter described Varound ashaft, and having means automatcally lock the said ring with the shaftupon rotative movement of the former with respect to the shaft.

5. A lubricating pulley including a hub portion havinga lubricantchamberl and a bore through which the shaft extends, provided withannular recesses adjacent its ends around the shaft and communicatingVannular grooves beyond the Vfirst named `grooves and communicatingtherewith.

7. A lubricating pulley includingv a hub portion having a lubricantchamber and a kbore through which the shaft extends, said bore beingprovided with longitudinal inclined grooves extending along the shaftand communicating at their inner ends with the lubricant chamber, andsaid inner ends of said grooves'projecting at an acute angle withrespect to the longitudinal axis of the I bore, all for the purposedescribed.

8. ln a lubricating device of the characa lubricating ring disposedically engageable with the shaft whereby to limit relative movementthereof.

HABCVEY GEUBEGE VANCE. Witnesses:

MAYMIE T. VANCE, Jol-IN L. WALKER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

and draw f CSI

